src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <time.h>
  33
  34 #include "intl.h"
  35 #include "news.h"
  36 #include "nntp.h"
  37 #include "socket.h"
  38 #include "recv.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "folder.h"
  42 #include "session.h"
  43 #include "statusbar.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47 #include "prefs_account.h"
  48 #include "inputdialog.h"
  49 #include "log.h"
  50 #include "progressindicator.h"
  51 #if USE_OPENSSL
  52 #  include "ssl.h"
  53 #endif
  54
  55 #define NNTP_PORT       119
  56 #if USE_OPENSSL
  57 #define NNTPS_PORT      563
  58 #endif
  59
  60 static void news_folder_init             (Folder        *folder,
  61                                           const gchar   *name,
  62                                           const gchar   *path);
  63
  64 #if USE_OPENSSL
  65 static Session *news_session_new         (const gchar   *server,
  66                                           gushort        port,
  67                                           const gchar   *userid,
  68                                           const gchar   *passwd,
  69                                           SSLType        ssl_type);
  70 #else
  71 static Session *news_session_new         (const gchar   *server,
  72                                           gushort        port,
  73                                           const gchar   *userid,
  74                                           const gchar   *passwd);
  75 #endif
  76
  77 static gint news_get_article_cmd         (NNTPSession   *session,
  78                                           const gchar   *cmd,
  79                                           gint           num,
  80                                           gchar         *filename);
  81 static gint news_get_article             (NNTPSession   *session,
  82                                           gint           num,
  83                                           gchar         *filename);
  84
  85 static gint news_select_group            (NNTPSession   *session,
  86                                           const gchar   *group,
  87                                           gint          *num,
  88                                           gint          *first,
  89                                           gint          *last);
  90 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  91 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  92                                           MsgInfo       *msginfo);
  93 static gint news_remove_msg              (Folder        *folder,
  94                                           FolderItem    *item,
  95                                           gint           num);
  96 gint news_get_num_list                   (Folder        *folder,
  97                                           FolderItem    *item,
  98                                           GSList       **list);
  99 MsgInfo *news_get_msginfo                (Folder        *folder,
 100                                           FolderItem    *item,
 101                                           gint           num);
 102 GSList *news_get_msginfos                (Folder        *folder,
 103                                           FolderItem    *item,
 104                                           GSList        *msgnum_list);
 105
 106 gint news_post_stream                    (Folder        *folder,
 107                                           FILE          *fp);
 108
 109 FolderClass news_class =
 110 {
 111         F_NEWS,
 112         "news",
 113         "News",
 114
 115         /* Folder functions */
 116         news_folder_new,
 117         news_folder_destroy,
 118         NULL,
 119         NULL,
 120
 121         /* FolderItem functions */
 122         NULL,
 123         NULL,
 124         NULL,
 125         NULL,
 126         NULL,
 127         news_get_num_list,
 128         NULL,
 129         NULL,
 130         NULL,
 131         NULL,
 132
 133         /* Message functions */
 134         news_get_msginfo,
 135         news_get_msginfos,
 136         news_fetch_msg,
 137         NULL,
 138         NULL,
 139         NULL,
 140         NULL,
 141         NULL,
 142         news_remove_msg,
 143         NULL,
 144         NULL,
 145         NULL,
 146         NULL,
 147 };
 148
 149 FolderClass *news_get_class()
 150 {
 151         return &news_class;
 152 }
 153
 154 Folder *news_folder_new(const gchar *name, const gchar *path)
 155 {
 156         Folder *folder;
 157
 158         folder = (Folder *)g_new0(NewsFolder, 1);
 159         folder->class = &news_class;
 160         news_folder_init(folder, name, path);
 161
 162         return folder;
 163 }
 164
 165 void news_folder_destroy(Folder *folder)
 166 {
 167         gchar *dir;
 168
 169         dir = folder_get_path(folder);
 170         if (is_dir_exist(dir))
 171                 remove_dir_recursive(dir);
 172         g_free(dir);
 173
 174         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 175 }
 176
 177 static void news_folder_init(Folder *folder, const gchar *name,
 178                              const gchar *path)
 179 {
 180         folder_remote_folder_init(folder, name, path);
 181 }
 182
 183 #if USE_OPENSSL
 184 static Session *news_session_new(const gchar *server, gushort port,
 185                                  const gchar *userid, const gchar *passwd,
 186                                  SSLType ssl_type)
 187 #else
 188 static Session *news_session_new(const gchar *server, gushort port,
 189                                  const gchar *userid, const gchar *passwd)
 190 #endif
 191 {
 192         gchar buf[NNTPBUFSIZE];
 193         NNTPSession *session;
 194         NNTPSockInfo *nntp_sock;
 195
 196         g_return_val_if_fail(server != NULL, NULL);
 197
 198         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 199
 200 #if USE_OPENSSL
 201         if (userid && passwd)
 202                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd,
 203                                            ssl_type);
 204         else
 205                 nntp_sock = nntp_open(server, port, buf, ssl_type);
 206 #else
 207         if (userid && passwd)
 208                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
 209         else
 210                 nntp_sock = nntp_open(server, port, buf);
 211 #endif
 212
 213         if (nntp_sock == NULL)
 214                 return NULL;
 215
 216         session = g_new(NNTPSession, 1);
 217         SESSION(session)->type             = SESSION_NEWS;
 218         SESSION(session)->server           = g_strdup(server);
 219         session->nntp_sock                 = nntp_sock;
 220         SESSION(session)->sock             = nntp_sock->sock;
 221         SESSION(session)->last_access_time = time(NULL);
 222         SESSION(session)->data             = NULL;
 223
 224         SESSION(session)->destroy          = news_session_destroy;
 225
 226         session->group = NULL;
 227
 228         return SESSION(session);
 229 }
 230
 231 void news_session_destroy(Session *session)
 232 {
 233         nntp_close(NNTP_SESSION(session)->nntp_sock);
 234         NNTP_SESSION(session)->nntp_sock = NULL;
 235         session->sock = NULL;
 236
 237         g_free(NNTP_SESSION(session)->group);
 238 }
 239
 240 static Session *news_session_new_for_folder(Folder *folder)
 241 {
 242         Session *session;
 243         PrefsAccount *ac;
 244         const gchar *userid = NULL;
 245         gchar *passwd = NULL;
 246         gushort port;
 247         gchar buf[NNTPBUFSIZE];
 248
 249         g_return_val_if_fail(folder != NULL, NULL);
 250         g_return_val_if_fail(folder->account != NULL, NULL);
 251
 252         ac = folder->account;
 253         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 254                 userid = ac->userid;
 255                 if (ac->passwd && ac->passwd[0])
 256                         passwd = g_strdup(ac->passwd);
 257                 else
 258                         passwd = input_dialog_query_password(ac->nntp_server,
 259                                                              userid);
 260         }
 261
 262 #if USE_OPENSSL
 263         port = ac->set_nntpport ? ac->nntpport
 264                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 265         session = news_session_new(ac->nntp_server, port, userid, passwd,
 266                                    ac->ssl_nntp);
 267 #else
 268         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 269         session = news_session_new(ac->nntp_server, port, userid, passwd);
 270 #endif
 271         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 272                 nntp_forceauth(NNTP_SESSION(session)->nntp_sock, buf, userid, passwd);
 273
 274         g_free(passwd);
 275
 276         return session;
 277 }
 278
 279 NNTPSession *news_session_get(Folder *folder)
 280 {
 281         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 282
 283         g_return_val_if_fail(folder != NULL, NULL);
 284         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 285         g_return_val_if_fail(folder->account != NULL, NULL);
 286
 287         if (!rfolder->session) {
 288                 rfolder->session = news_session_new_for_folder(folder);
 289                 return NNTP_SESSION(rfolder->session);
 290         }
 291
 292         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 293                 rfolder->session->last_access_time = time(NULL);
 294                 return NNTP_SESSION(rfolder->session);
 295         }
 296
 297         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 298             != NN_SUCCESS) {
 299                 log_warning("NNTP connection to %s:%d has been"
 300                               " disconnected. Reconnecting...\n",
 301                             folder->account->nntp_server,
 302                             folder->account->set_nntpport ?
 303                             folder->account->nntpport : NNTP_PORT);
 304                 session_destroy(rfolder->session);
 305                 rfolder->session = news_session_new_for_folder(folder);
 306         }
 307
 308         if (rfolder->session)
 309                 rfolder->session->last_access_time = time(NULL);
 310         return NNTP_SESSION(rfolder->session);
 311 }
 312
 313 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 314 {
 315         gchar *path, *filename;
 316         NNTPSession *session;
 317         gint ok;
 318
 319         g_return_val_if_fail(folder != NULL, NULL);
 320         g_return_val_if_fail(item != NULL, NULL);
 321
 322         path = folder_item_get_path(item);
 323         if (!is_dir_exist(path))
 324                 make_dir_hier(path);
 325         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 326         g_free(path);
 327
 328         if (is_file_exist(filename)) {
 329                 debug_print("article %d has been already cached.\n", num);
 330                 return filename;
 331         }
 332
 333         session = news_session_get(folder);
 334         if (!session) {
 335                 g_free(filename);
 336                 return NULL;
 337         }
 338
 339         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 340         if (ok != NN_SUCCESS) {
 341                 g_warning("can't select group %s\n", item->path);
 342                 g_free(filename);
 343                 return NULL;
 344         }
 345
 346         debug_print("getting article %d...\n", num);
 347         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 348                               num, filename);
 349         if (ok < 0) {
 350                 g_warning("can't read article %d\n", num);
 351                 session_destroy(SESSION(session));
 352                 REMOTE_FOLDER(folder)->session = NULL;
 353                 g_free(filename);
 354                 return NULL;
 355         }
 356
 357         return filename;
 358 }
 359
 360 gint news_scan_group(Folder *folder, FolderItem *item)
 361 {
 362         NNTPSession *session;
 363         gint num = 0, first = 0, last = 0;
 364         gint ok;
 365
 366         g_return_val_if_fail(folder != NULL, -1);
 367         g_return_val_if_fail(item != NULL, -1);
 368
 369         session = news_session_get(folder);
 370         if (!session) return -1;
 371
 372         ok = news_select_group(session, item->path, &num, &first, &last);
 373         if (ok != NN_SUCCESS) {
 374                 log_warning("can't set group: %s\n", item->path);
 375                 return -1;
 376         }
 377
 378         if (num == 0) {
 379                 item->new = item->unread = item->total = item->last_num = 0;
 380                 return 0;
 381         }
 382
 383 /*
 384         path = folder_item_get_path(item);
 385         if (path && is_dir_exist(path)) {
 386                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 387                                      first);
 388         }
 389         g_free(path);
 390
 391         if (max < first || last < min)
 392                 new = unread = total = num;
 393         else {
 394                 if (min < first)
 395                         min = first;
 396
 397                 if (last < max)
 398                         max = last;
 399                 else if (max < last) {
 400                         new += last - max;
 401                         unread += last - max;
 402                 }
 403
 404                 if (new > num) new = num;
 405                 if (unread > num) unread = num;
 406         }
 407
 408         item->new = new;
 409         item->unread = unread;
 410         item->total = num;
 411         item->last_num = last;
 412 */
 413         return 0;
 414 }
 415
 416 static NewsGroupInfo *news_group_info_new(const gchar *name,
 417                                           gint first, gint last, gchar type)
 418 {
 419         NewsGroupInfo *ginfo;
 420
 421         ginfo = g_new(NewsGroupInfo, 1);
 422         ginfo->name = g_strdup(name);
 423         ginfo->first = first;
 424         ginfo->last = last;
 425         ginfo->type = type;
 426
 427         return ginfo;
 428 }
 429
 430 static void news_group_info_free(NewsGroupInfo *ginfo)
 431 {
 432         g_free(ginfo->name);
 433         g_free(ginfo);
 434 }
 435
 436 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 437                                     NewsGroupInfo *ginfo2)
 438 {
 439         return g_strcasecmp(ginfo1->name, ginfo2->name);
 440 }
 441
 442 GSList *news_get_group_list(Folder *folder)
 443 {
 444         gchar *path, *filename;
 445         FILE *fp;
 446         GSList *list = NULL;
 447         GSList *last = NULL;
 448         gchar buf[NNTPBUFSIZE];
 449
 450         g_return_val_if_fail(folder != NULL, NULL);
 451         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 452
 453         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 454         if (!is_dir_exist(path))
 455                 make_dir_hier(path);
 456         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 457         g_free(path);
 458
 459         if ((fp = fopen(filename, "rb")) == NULL) {
 460                 NNTPSession *session;
 461
 462                 session = news_session_get(folder);
 463                 if (!session) {
 464                         g_free(filename);
 465                         return NULL;
 466                 }
 467
 468                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 469                         g_free(filename);
 470                         return NULL;
 471                 }
 472                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 473                         log_warning("can't retrieve newsgroup list\n");
 474                         session_destroy(SESSION(session));
 475                         REMOTE_FOLDER(folder)->session = NULL;
 476                         g_free(filename);
 477                         return NULL;
 478                 }
 479
 480                 if ((fp = fopen(filename, "rb")) == NULL) {
 481                         FILE_OP_ERROR(filename, "fopen");
 482                         g_free(filename);
 483                         return NULL;
 484                 }
 485         }
 486
 487         while (fgets(buf, sizeof(buf), fp) != NULL) {
 488                 gchar *p = buf;
 489                 gchar *name;
 490                 gint last_num;
 491                 gint first_num;
 492                 gchar type;
 493                 NewsGroupInfo *ginfo;
 494
 495                 p = strchr(p, ' ');
 496                 if (!p) continue;
 497                 *p = '\0';
 498                 p++;
 499                 name = buf;
 500
 501                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 502                         continue;
 503
 504                 ginfo = news_group_info_new(name, first_num, last_num, type);
 505
 506                 if (!last)
 507                         last = list = g_slist_append(NULL, ginfo);
 508                 else {
 509                         last = g_slist_append(last, ginfo);
 510                         last = last->next;
 511                 }
 512         }
 513
 514         fclose(fp);
 515         g_free(filename);
 516
 517         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 518
 519         return list;
 520 }
 521
 522 void news_group_list_free(GSList *group_list)
 523 {
 524         GSList *cur;
 525
 526         if (!group_list) return;
 527
 528         for (cur = group_list; cur != NULL; cur = cur->next)
 529                 news_group_info_free((NewsGroupInfo *)cur->data);
 530         g_slist_free(group_list);
 531 }
 532
 533 void news_remove_group_list_cache(Folder *folder)
 534 {
 535         gchar *path, *filename;
 536
 537         g_return_if_fail(folder != NULL);
 538         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 539
 540         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 541         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 542         g_free(path);
 543
 544         if (is_file_exist(filename)) {
 545                 if (remove(filename) < 0)
 546                         FILE_OP_ERROR(filename, "remove");
 547         }
 548         g_free(filename);
 549 }
 550
 551 gint news_post(Folder *folder, const gchar *file)
 552 {
 553         FILE *fp;
 554         gint ok;
 555
 556         g_return_val_if_fail(folder != NULL, -1);
 557         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 558         g_return_val_if_fail(file != NULL, -1);
 559
 560         if ((fp = fopen(file, "rb")) == NULL) {
 561                 FILE_OP_ERROR(file, "fopen");
 562                 return -1;
 563         }
 564
 565         ok = news_post_stream(folder, fp);
 566
 567         fclose(fp);
 568
 569         return ok;
 570 }
 571
 572 gint news_post_stream(Folder *folder, FILE *fp)
 573 {
 574         NNTPSession *session;
 575         gint ok;
 576
 577         g_return_val_if_fail(folder != NULL, -1);
 578         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 579         g_return_val_if_fail(fp != NULL, -1);
 580
 581         session = news_session_get(folder);
 582         if (!session) return -1;
 583
 584         ok = nntp_post(session->nntp_sock, fp);
 585         if (ok != NN_SUCCESS) {
 586                 log_warning("can't post article.\n");
 587                 return -1;
 588         }
 589
 590         return 0;
 591 }
 592
 593 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 594                                  gint num, gchar *filename)
 595 {
 596         gchar *msgid;
 597
 598         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 599             != NN_SUCCESS)
 600                 return -1;
 601
 602         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 603         g_free(msgid);
 604
 605         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 606                 log_warning("can't retrieve article %d\n", num);
 607                 return -1;
 608         }
 609
 610         return 0;
 611 }
 612
 613 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 614 {
 615         gchar * dir;
 616         gint r;
 617
 618         dir = folder_item_get_path(item);
 619         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 620         r = remove_numbered_files(dir, num, num);
 621         g_free(dir);
 622
 623         return r;
 624 }
 625
 626 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 627 {
 628         return news_get_article_cmd(session, "ARTICLE", num, filename);
 629 }
 630
 631 /**
 632  * news_select_group:
 633  * @session: Active NNTP session.
 634  * @group: Newsgroup name.
 635  * @num: Estimated number of articles.
 636  * @first: First article number.
 637  * @last: Last article number.
 638  *
 639  * Select newsgroup @group with the GROUP command if it is not already
 640  * selected in @session, or article numbers need to be returned.
 641  *
 642  * Return value: NNTP result code.
 643  **/
 644 static gint news_select_group(NNTPSession *session, const gchar *group,
 645                               gint *num, gint *first, gint *last)
 646 {
 647         gint ok;
 648         gint num_, first_, last_;
 649
 650         if (!num || !first || !last) {
 651                 if (session->group && g_strcasecmp(session->group, group) == 0)
 652                         return NN_SUCCESS;
 653                 num = &num_;
 654                 first = &first_;
 655                 last = &last_;
 656         }
 657
 658         g_free(session->group);
 659         session->group = NULL;
 660
 661         ok = nntp_group(session->nntp_sock, group, num, first, last);
 662         if (ok == NN_SUCCESS)
 663                 session->group = g_strdup(group);
 664
 665         return ok;
 666 }
 667
 668 #define PARSE_ONE_PARAM(p, srcp) \
 669 { \
 670         p = strchr(srcp, '\t'); \
 671         if (!p) return NULL; \
 672         else \
 673                 *p++ = '\0'; \
 674 }
 675
 676 static MsgInfo *news_parse_xover(const gchar *xover_str)
 677 {
 678         MsgInfo *msginfo;
 679         gchar buf[NNTPBUFSIZE];
 680         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 681         gchar *p;
 682         gint num, size_int, line_int;
 683         gchar *xover_buf;
 684
 685         Xstrdup_a(xover_buf, xover_str, return NULL);
 686
 687         PARSE_ONE_PARAM(subject, xover_buf);
 688         PARSE_ONE_PARAM(sender, subject);
 689         PARSE_ONE_PARAM(date, sender);
 690         PARSE_ONE_PARAM(msgid, date);
 691         PARSE_ONE_PARAM(ref, msgid);
 692         PARSE_ONE_PARAM(size, ref);
 693         PARSE_ONE_PARAM(line, size);
 694         PARSE_ONE_PARAM(xref, line);
 695
 696         tmp = strchr(xref, '\t');
 697         if (!tmp) tmp = strchr(line, '\r');
 698         if (!tmp) tmp = strchr(line, '\n');
 699         if (tmp) *tmp = '\0';
 700
 701         num = atoi(xover_str);
 702         size_int = atoi(size);
 703         line_int = atoi(line);
 704
 705         /* set MsgInfo */
 706         msginfo = procmsg_msginfo_new();
 707         msginfo->msgnum = num;
 708         msginfo->size = size_int;
 709
 710         msginfo->date = g_strdup(date);
 711         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 712
 713         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 714         msginfo->from = g_strdup(buf);
 715         msginfo->fromname = procheader_get_fromname(buf);
 716
 717         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 718         msginfo->subject = g_strdup(buf);
 719
 720         extract_parenthesis(msgid, '<', '>');
 721         remove_space(msgid);
 722         if (*msgid != '\0')
 723                 msginfo->msgid = g_strdup(msgid);
 724
 725         msginfo->references = g_strdup(ref);
 726         eliminate_parenthesis(ref, '(', ')');
 727         if ((p = strrchr(ref, '<')) != NULL) {
 728                 extract_parenthesis(p, '<', '>');
 729                 remove_space(p);
 730                 if (*p != '\0')
 731                         msginfo->inreplyto = g_strdup(p);
 732         }
 733
 734         msginfo->xref = g_strdup(xref);
 735         p = msginfo->xref+strlen(msginfo->xref) - 1;
 736         while (*p == '\r' || *p == '\n') {
 737                 *p = '\0';
 738                 p--;
 739         }
 740
 741         return msginfo;
 742 }
 743
 744 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 745 {
 746         gchar *p;
 747         gchar *tmp;
 748         gint num;
 749
 750         p = strchr(xhdr_str, ' ');
 751         if (!p)
 752                 return NULL;
 753         else
 754                 p++;
 755
 756         num = atoi(xhdr_str);
 757         if (msginfo->msgnum != num) return NULL;
 758
 759         tmp = strchr(p, '\r');
 760         if (!tmp) tmp = strchr(p, '\n');
 761
 762         if (tmp)
 763                 return g_strndup(p, tmp - p);
 764         else
 765                 return g_strdup(p);
 766 }
 767
 768 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 769 {
 770         gchar * tmp;
 771         FILE * tmpfp;
 772         gchar buf[BUFFSIZE];
 773
 774         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 775                               G_DIR_SEPARATOR, (gint)msginfo);
 776         if (tmp == NULL)
 777                 return -1;
 778
 779         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 780                 FILE_OP_ERROR(tmp, "fopen");
 781                 return -1;
 782         }
 783         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 784                 FILE_OP_ERROR(tmp, "chmod");
 785                 g_warning("can't change file mode\n");
 786         }
 787
 788         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 789         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 790         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 791         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 792         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 793         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 794         get_rfc822_date(buf, sizeof(buf));
 795         fprintf(tmpfp, "Date: %s\r\n", buf);
 796         fprintf(tmpfp, "\r\n");
 797         fprintf(tmpfp, "removed with sylpheed\r\n");
 798
 799         fclose(tmpfp);
 800
 801         news_post(folder, tmp);
 802         remove(tmp);
 803
 804         g_free(tmp);
 805
 806         return 0;
 807 }
 808
 809 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 810 {
 811         NNTPSession *session;
 812         gint i, ok, num, first, last, nummsgs = 0;
 813         gchar *dir;
 814
 815         g_return_val_if_fail(item != NULL, -1);
 816         g_return_val_if_fail(item->folder != NULL, -1);
 817         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 818
 819         session = news_session_get(folder);
 820         g_return_val_if_fail(session != NULL, -1);
 821
 822         ok = news_select_group(session, item->path, &num, &first, &last);
 823         if (ok != NN_SUCCESS) {
 824                 log_warning(_("can't set group: %s\n"), item->path);
 825                 return -1;
 826         }
 827
 828         if(last < first) {
 829                 log_warning(_("invalid article range: %d - %d\n"),
 830                             first, last);
 831                 return 0;
 832         }
 833
 834         for(i = first; i <= last; i++) {
 835                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 836                 nummsgs++;
 837         }
 838
 839         dir = folder_item_get_path(item);
 840         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 841         remove_numbered_files(dir, 1, first - 1);
 842         g_free(dir);
 843
 844         return nummsgs;
 845 }
 846
 847 #define READ_TO_LISTEND(hdr) \
 848         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 849                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 850                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 851                         return msginfo; \
 852                 } \
 853         }
 854
 855 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 856 {
 857         NNTPSession *session;
 858         MsgInfo *msginfo = NULL;
 859         gchar buf[NNTPBUFSIZE];
 860
 861         session = news_session_get(folder);
 862         g_return_val_if_fail(session != NULL, NULL);
 863         g_return_val_if_fail(item != NULL, NULL);
 864         g_return_val_if_fail(item->folder != NULL, NULL);
 865         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 866
 867         log_message(_("getting xover %d in %s...\n"),
 868                     num, item->path);
 869         if (nntp_xover(session->nntp_sock, num, num) != NN_SUCCESS) {
 870                 log_warning(_("can't get xover\n"));
 871                 return NULL;
 872         }
 873
 874         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 875                 log_warning(_("error occurred while getting xover.\n"));
 876                 return NULL;
 877         }
 878
 879         msginfo = news_parse_xover(buf);
 880         if (!msginfo) {
 881                 log_warning(_("invalid xover line: %s\n"), buf);
 882         }
 883
 884         READ_TO_LISTEND("xover");
 885
 886         if(!msginfo)
 887                 return NULL;
 888
 889         msginfo->folder = item;
 890         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 891         msginfo->flags.tmp_flags = MSG_NEWS;
 892         msginfo->newsgroups = g_strdup(item->path);
 893
 894         if (nntp_xhdr(session->nntp_sock, "to", num, num) != NN_SUCCESS) {
 895                 log_warning(_("can't get xhdr\n"));
 896                 return msginfo;
 897         }
 898
 899         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 900                 log_warning(_("error occurred while getting xhdr.\n"));
 901                 return msginfo;
 902         }
 903
 904         msginfo->to = news_parse_xhdr(buf, msginfo);
 905
 906         READ_TO_LISTEND("xhdr (to)");
 907
 908         if (nntp_xhdr(session->nntp_sock, "cc", num, num) != NN_SUCCESS) {
 909                 log_warning(_("can't get xhdr\n"));
 910                 return msginfo;
 911         }
 912
 913         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 914                 log_warning(_("error occurred while getting xhdr.\n"));
 915                 return msginfo;
 916         }
 917
 918         msginfo->cc = news_parse_xhdr(buf, msginfo);
 919
 920         READ_TO_LISTEND("xhdr (cc)");
 921
 922         return msginfo;
 923 }
 924
 925 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 926 {
 927         gchar buf[NNTPBUFSIZE];
 928         GSList *newlist = NULL;
 929         GSList *llast = NULL;
 930         MsgInfo *msginfo;
 931         guint count = 0, lines = (end - begin + 2) * 3;
 932
 933         g_return_val_if_fail(session != NULL, NULL);
 934         g_return_val_if_fail(item != NULL, NULL);
 935
 936         log_message(_("getting xover %d - %d in %s...\n"),
 937                     begin, end, item->path);
 938         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 939                 log_warning(_("can't get xover\n"));
 940                 return NULL;
 941         }
 942
 943         for (;;) {
 944                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 945                         log_warning(_("error occurred while getting xover.\n"));
 946                         return newlist;
 947                 }
 948                 count++;
 949                 progressindicator_set_percentage
 950                         (PROGRESS_TYPE_NETWORK,
 951                          session->fetch_base_percentage +
 952                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 953
 954                 if (buf[0] == '.' && buf[1] == '\r') break;
 955
 956                 msginfo = news_parse_xover(buf);
 957                 if (!msginfo) {
 958                         log_warning(_("invalid xover line: %s\n"), buf);
 959                         continue;
 960                 }
 961
 962                 msginfo->folder = item;
 963                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 964                 msginfo->flags.tmp_flags = MSG_NEWS;
 965                 msginfo->newsgroups = g_strdup(item->path);
 966
 967                 if (!newlist)
 968                         llast = newlist = g_slist_append(newlist, msginfo);
 969                 else {
 970                         llast = g_slist_append(llast, msginfo);
 971                         llast = llast->next;
 972                 }
 973         }
 974
 975         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 976                 log_warning(_("can't get xhdr\n"));
 977                 return newlist;
 978         }
 979
 980         llast = newlist;
 981
 982         for (;;) {
 983                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 984                         log_warning(_("error occurred while getting xhdr.\n"));
 985                         return newlist;
 986                 }
 987                 count++;
 988                 progressindicator_set_percentage
 989                         (PROGRESS_TYPE_NETWORK,
 990                          session->fetch_base_percentage +
 991                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 992
 993                 if (buf[0] == '.' && buf[1] == '\r') break;
 994                 if (!llast) {
 995                         g_warning("llast == NULL\n");
 996                         continue;
 997                 }
 998
 999                 msginfo = (MsgInfo *)llast->data;
1000                 msginfo->to = news_parse_xhdr(buf, msginfo);
1001
1002                 llast = llast->next;
1003         }
1004
1005         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
1006                 log_warning(_("can't get xhdr\n"));
1007                 return newlist;
1008         }
1009
1010         llast = newlist;
1011
1012         for (;;) {
1013                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1014                         log_warning(_("error occurred while getting xhdr.\n"));
1015                         return newlist;
1016                 }
1017                 count++;
1018                 progressindicator_set_percentage
1019                         (PROGRESS_TYPE_NETWORK,
1020                          session->fetch_base_percentage +
1021                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1022
1023                 if (buf[0] == '.' && buf[1] == '\r') break;
1024                 if (!llast) {
1025                         g_warning("llast == NULL\n");
1026                         continue;
1027                 }
1028
1029                 msginfo = (MsgInfo *)llast->data;
1030                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1031
1032                 llast = llast->next;
1033         }
1034
1035         return newlist;
1036 }
1037
1038 gint news_fetch_msgnum_sort(gconstpointer a, gconstpointer b)
1039 {
1040         return (GPOINTER_TO_INT(a) - GPOINTER_TO_INT(b));
1041 }
1042
1043 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1044 {
1045         NNTPSession *session;
1046         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1047         guint first, last, next;
1048         guint tofetch, fetched;
1049
1050         g_return_val_if_fail(folder != NULL, NULL);
1051         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1052         g_return_val_if_fail(msgnum_list != NULL, NULL);
1053         g_return_val_if_fail(item != NULL, NULL);
1054
1055         session = news_session_get(folder);
1056         g_return_val_if_fail(session != NULL, NULL);
1057
1058         tmp_msgnum_list = g_slist_copy(msgnum_list);
1059         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, news_fetch_msgnum_sort);
1060
1061         progressindicator_start(PROGRESS_TYPE_NETWORK);
1062         tofetch = g_slist_length(tmp_msgnum_list);
1063         fetched = 0;
1064
1065         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1066         last = first;
1067         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1068                 next = GPOINTER_TO_INT(elem->data);
1069                 if(next != (last + 1)) {
1070                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1071                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1072                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1073                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1074                         fetched = last - first + 1;
1075                         first = next;
1076                 }
1077                 last = next;
1078         }
1079         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1080         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1081         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1082         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1083
1084         g_slist_free(tmp_msgnum_list);
1085
1086         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1087
1088         return msginfo_list;
1089 }